竞赛帆船龙骨盒结构优化设计

Optimal Structure Design of Keelbox of Racing Yacht

龙骨盒是竞赛帆船特有的结构,其功能是维持压载龙骨竖直升降,因其为帆船主要受力构件之一,实际使用中易损坏,提高龙骨盒强度是企业和艇主亟须解决的问题。通过水动力分析获得龙骨盒结构响应,运用多级优化对龙骨盒帽型材和桅杆作用区域进行形状、尺寸优化和铺层顺序优化。优化结果显示,基于响应面法和遗传算法的多级优化降低75.92%的龙骨盒整体应变能和提高29.40%的铺层强度比,该方法对提升龙骨盒强度和承载能力具有实用和借鉴意义。

Keelbox is the unique structure of racing yacht whose Junction is to keep the retractable keel I（fiing straight up and down. The keelbox broken easily for it is the mainly bearing carrier of racing yacht, how to improve the strength of keelbox is a question which is urgent to be solvedjbr the shipyards and owners, In this paper hydrodynamic analysis is considered .for obtaining the structural response of keelbox, multistage optimization is used in shape and size optimization, stucking-sequence optimization of the top hat section ofthe broken area of keelbox. The result shows the optimization method which is based on response surface and genetic algorithm reduce 75.92% strain energy and improve 29.40% layer intensity ratio of the keelbox, The method present in this paper could be used as a reference in the study of improving the strength of keelbox.